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<title>Using the GNU Compiler Collection (GCC): Function Specific Option Pragmas</title>

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<a name="Function-Specific-Option-Pragmas"></a>
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<p>
Next: <a href="Loop_002dSpecific-Pragmas.html#Loop_002dSpecific-Pragmas" accesskey="n" rel="next">Loop-Specific Pragmas</a>, Previous: <a href="Push_002fPop-Macro-Pragmas.html#Push_002fPop-Macro-Pragmas" accesskey="p" rel="prev">Push/Pop Macro Pragmas</a>, Up: <a href="Pragmas.html#Pragmas" accesskey="u" rel="up">Pragmas</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Function-Specific-Option-Pragmas-1"></a>
<h4 class="subsection">6.61.15 Function Specific Option Pragmas</h4>

<dl compact="compact">
<dt><code>#pragma GCC target (<var>&quot;string&quot;</var>...)</code></dt>
<dd><a name="index-pragma-GCC-target"></a>

<p>This pragma allows you to set target specific options for functions
defined later in the source file.  One or more strings can be
specified.  Each function that is defined after this point is as
if <code>attribute((target(&quot;STRING&quot;)))</code> was specified for that
function.  The parenthesis around the options is optional.
See <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>, for more information about the
<code>target</code> attribute and the attribute syntax.
</p>
<p>The <code>#pragma GCC target</code> pragma is presently implemented for
x86, PowerPC, and Nios II targets only.
</p></dd>
</dl>

<dl compact="compact">
<dt><code>#pragma GCC optimize (<var>&quot;string&quot;</var>...)</code></dt>
<dd><a name="index-pragma-GCC-optimize"></a>

<p>This pragma allows you to set global optimization options for functions
defined later in the source file.  One or more strings can be
specified.  Each function that is defined after this point is as
if <code>attribute((optimize(&quot;STRING&quot;)))</code> was specified for that
function.  The parenthesis around the options is optional.
See <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>, for more information about the
<code>optimize</code> attribute and the attribute syntax.
</p></dd>
</dl>

<dl compact="compact">
<dt><code>#pragma GCC push_options</code></dt>
<dt><code>#pragma GCC pop_options</code></dt>
<dd><a name="index-pragma-GCC-push_005foptions"></a>
<a name="index-pragma-GCC-pop_005foptions"></a>

<p>These pragmas maintain a stack of the current target and optimization
options.  It is intended for include files where you temporarily want
to switch to using a different &lsquo;<samp>#pragma GCC target</samp>&rsquo; or
&lsquo;<samp>#pragma GCC optimize</samp>&rsquo; and then to pop back to the previous
options.
</p></dd>
</dl>

<dl compact="compact">
<dt><code>#pragma GCC reset_options</code></dt>
<dd><a name="index-pragma-GCC-reset_005foptions"></a>

<p>This pragma clears the current <code>#pragma GCC target</code> and
<code>#pragma GCC optimize</code> to use the default switches as specified
on the command line.
</p></dd>
</dl>




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